Pipeless furnace



Patented Dec. 30, 1924.

JNETE STTES LOUIS WHITZEL DAMAN, OF SACKVILLE, NEVI BRUNSWICK, CANADA.

PIEELESS FUR/NACE.

Application filed November 27,1922. Serial No. 603,663.

To all whom t may concern.'

Be it known that I, LOUIS Tirrrznr DAMAN, a subject of the King of Great Britain, and residing at Sackville, in the Province of New Brunswick, in the Dominion of Canada, have invented a new and useful Pipeless Furnace, of which the following is the specification.

The invention relates to a pipeless furnace as described in the present specification and shown in the accompanying drawings that .form part of the saine.

The invention consists essentially of the novel features pointed `out broadly and specically in the claims for novelty following a description containing an explanation in detail of an acceptable form of the invention.

The objects of the invention are to eliminate pipes and tubes within the heater and insure the delivery of the hot air beyond the furnace room: to economize in the consumption of the fuel; to aid the circulation of the air, to facilitate the assembling of the parts and insure convenience and reduced cost in shipping and packing; and generally to provide a safe, durable and efficient heating furnace.

In the drawings, Figure 1 is a vertical sectional view of the heater, casing and air jacket.

Figure 2 is a front elevation of the furnace.

Figure 3 is a cross sectional view on the line 3 3 in Figure 2.

Figure 4 is a cross sectional view on the line 4-4 in Figure 2.

Figure l5 is a detail of one side wall of the casing.

Figure 6 is a detail of the rear wall of the casing.

Figure 7 is a detail of the other side wall of the casing.

Figure 8 is a detail of the cap frame.

Like numerals of reference indicate corresponding parts in the various figures.

Referring to the drawings, the furnace casing is made up of three sections, 5, 6, and 7, and a single front 8, each section having an outer wall 9 and an inner wall 10 forming the cold air jacket 11.

The inner walls 10 are faced on the inner side with corrugated sheet metal 12 over the asbestos sheet lining 13, said facing and lining terminating just above the perforations 14 through the lower portion of each inner wall, said perforations being ports for the passage of' cold air into the hot air chamber 15. l

The sections 5, 6, and 7 form independent cold air paths to the hot air chamber and are surmounted by the cap frame 16 formed of the connected inner and outer rings 17 and 18, the inner ring 17 being` formed with the lower flange 19 tapered in cross section and the upper flange 20 projecting inwardly towards the centre and the outer ring being formed with the lower rim flange 21 and the upper inwardly extending flange 22. The rings 17 and 18 are connected between parts as shown at 23, 24 and 25, the latter forming a baffle wall at the upper lend lof the front 8,

It will thus be seen that between the rings 17 and 18 the openings 26, 27 and 28 are left for the passage of the cold air into the cold air jacket and through the paths formed by the sections 5, 6, and 7 to the portsfor perforations 14. The outer cap 29 is supported on the frame 16 over the flange 22 and the inner cap 30 is supported on the frame v1G over the flange 20, each cap having a vwide opening in the top of the crown forming the annular cold air inlet 31 `to the cold air jacket and the hot air outlet 32 from the hot air chamber 15, said cap 30 being faced on the inner side with the metal plates 33 riveted through the asbestos lining 34.

The top frame 35 is also formed of two rings 36 and 37, the inner ring` 36 having a lower iiange fitting' into the crown of the inner cap 17 and` encircling' the hot air'outlet, an upper fiange 39 extending into the hot air passage wall 40.

It will be seen from the description of the upper rings 36 and 37 that flanges are provided for the passage structure to the heated chamber as for insta-nce the ianges 41 forming a square and extending upwardly from the ring 37 and the aforesaid .cire cular fiange 39. The circular passage wall 42, continuing the hot air outlet 32, is tted to the flange 39, while the outer square passage is enclosed by the wall 44 fittedy to the fla-nge 41 and surrounding the hot air outlet passage wall 42, and forming between t-he latter and itself a cold air passage tothe port-s 31 leading into the passages between caps and furnace walls.

rlhe sections 5, 6 and 7 have the overla s 45 and 46 from the outer and innerv wa ls respectively to insure good fitting.

The base 47 is vformed with the upstanding inner circular flange 48 and the outer rim flange 49, the latter being inwardly turned at 50 and 5l at each side of the furnace front to engage the ends Iof the side sections 5 and 7. An opening 52 is preferably left in the middle of the base 47 and the heater 53 stands over said opening and is formed with a walled fuel passage ex tending to a fuel opening in the front 8 and a walled ash passage extending to an ash opening in the front 8. The fire box 58 is above the ash compartment 59 and the combustion dome 60 above the firebox, said dome 60 having a smoke outlet 6l.

In the operation of this furnace 'the air is continuously drawn into the casing from the atmosphere through the paths in the *several sections between the outer and inner walls, the connecting ports to the hot air chamber being the lower perforations. The air rises in the hot chamber around the heater and becomes thoroughly warmed and passes out through the central cap and outlet passage wall into the various passages to the registers for heating purposes.

rlhe sectional construction of this furnace is exceptionally meritorious, especially for repairing and replacing of parts and for packing and shipping purposes. The circulation of air is another feature that may be mentioned for there is practically no obstruction to its passage.

Vhat I claim is l. ln a furnace, side and rear casings forming unobstructed cold air passages from the upper to the lower end, a furnace front plate between said casings, upper and lower 'flanged rings forming the means of securing said casings and furnace front as a furnace outer wall, a cap on said upper ring vhaving cold and hot air passages and a heater contained within said outer wall and connected with the furnace front.

2. In a furnace, side and rear casings, forming unobstructed cold air passages from the upper to the lower end and discharging into the hot chamber of an inner wall of said casings and a base locking said casings at the lower end, a furnace front plate between said casings, upper and lower flanged rings forming the means of securing said casings, and furnace front as a furnace outer wall, a cap on said upper ring haring cold and hot air passages and a heater contained within said outer wall and connected with the furnace front.

3; In a furnace, side and rear casings, forming unobstructed cold air passages from the upper to the lower end and having inner and outer walls open at the upper ends and perforated through the inner walls at the lower ends, a furnace front plate between said casings, upper and lower lianged rings forming the means of securing said casings and furnace front as a furnace outer wall, a cap on said upper ring having cold and hot air passages and a heater contained within said out-er wall and connected with the furnace front.

4. lin a furnace, side and rear casings forming unobstructed cold air passages from the upper to the lower end and having inner and outer walls, said inner walls being faced with corrugated metal over a facing of asbestos and perforated therethrough, a furnace front plate between said casings, upper and lower flanged rings forming the means of securing said casings and furnace front as a furnace outer wall, a cap on said upper ring having` cold and hot air passages and a heater contained within said outer wall and connected with the furnace front.

5. ln a furnace, side and rear casings forming unobstructed cold air passages from the upper to the lower end, a furnace front plate between said casings,` upper and lower flanged rings forming the means of securing said casings and furnace front as a furnace outer wall and forming the continuation of the aforesaid passages and a hot air outlet, a cap on said upper ring having cold and hot air passages and a heater contained within said outer wall and connected with. the furnace front. f

6. ln a furnace, side and rear casings forming unobstructed cold air passages from the upper to the lower end, a furnace front plate between said casings, upper and lower flanged rings forming the means of securing said casings and furnace front as a fur nace outer wall and having inlet and outlet air ports and a cap on said upper ring having cold and hot air passages and a heater contained within said outer wall and connected with the furnace front.

7. ln a furnace, side and rear casings forming unobstructed cold air passages from the upper to the lower end, a furnace front plate between said casings, upper and lower flanged rings foi ming the means of securing said casings and furnace front as a. furnace outer wall` a cap on said upper ring having cold and hot air passages and having circular inner and outer flanges above and below for walls and a` frame on top carrying a hot air walled passage and a boundary wall for directing` the cold air to its ports and a heater contained within said outer wall and connected with the furnace front.

Signed at Sackville, New Brunswick, this 8th day of November, 1922.

LOUIS lVlfllTZEL DAMAN.

Witnesses RALEIGH Tiurns, E. RioHARn. 

